[U-Boot] [Nios] New Nios Custodian

[Scott McNutt]

Dear u-boot Nios Developers,

Please welcome Thomas Chou as our new Nios custodian.

Over the past several months, my personal work load has
increased significantly. While this is great for me
both professionally and personally, it interferes with
my open source activity. In the best interest of the project,
I am very pleased to place the Nios custodian responsibilities
in Thomas' capable hands. He is an excellent Nios developer
and he continues to make significant contributions.

Best Regards,
--Scott